Vehicle-mounted early warning camera

Abstract

The application provides a vehicle-mounted early warning camera, belonging to the technical field of cameras, comprising a monitoring unit, a protection unit and a triggering unit, wherein the monitoring unit comprises a slide rail with a slide base, a base in suction connection with the slide base and a camera body mounted on the base, a receiving cavity is formed on the side of the slide base away from the slide rail, and a through triggering cavity is formed in the outer wall of the base; the protection unit comprises a shield arranged on both sides of the camera body along a first direction and a slide plate fixedly connected with the shield in one-to-one correspondence, and the slide plate is in sliding connection with the base along the first direction; the triggering unit comprises a triggering plug arranged in the triggering cavity, a traction rope connected between the inner wall of the receiving cavity and the triggering plug and a first elastic member fixedly connected between the slide plate and the inner wall of the triggering cavity, the triggering plug has an insertion part inserted between the two slide plates, and the first elastic member has a pre-tightening force for making the two slide plates close to each other. The application has the effect of reducing damage to the camera after the camera falls.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of cameras, and particularly relates to a vehicle-mounted early warning camera. BACKGROUND

[0002] Camera monitoring equipment is widely used in many fields due to its strong environmental perception capability. For example, in the anti-collision early warning system of a trackless rubber-tyred vehicle in a coal mine, camera monitoring equipment is installed at a specific position of the vehicle to capture real-time information around the vehicle, and potential obstacle collision risks are identified by means of intelligent analysis algorithms. Once a dangerous condition is detected, the system can immediately issue a warning signal in the form of an audible and visual alarm, a voice prompt, or vibration feedback.

[0003] In order to meet the dual requirements of stable installation and convenient disassembly, a composite mounting structure is usually used at present: a slide rail is fixedly installed at a suitable position of the vehicle to form a relatively firm and semi-permanent connection, and the camera is detachably connected with the slide seat of the slide rail. The detachable connection is mainly realized by physical buckling or adsorption. Since the vehicle-mounted equipment needs to be frequently taken out and put back in, for example, for maintenance and charging, the use of physical buckling connection will significantly increase the steps and time for installation and disassembly, and reduce the convenience of user experience. Therefore, the adsorption method is currently the mainstream.

[0004] The adsorption method mainly includes magnetic adsorption and vacuum adsorption. However, whether it is magnetic adsorption or vacuum adsorption, due to the large vibration and bumping of the coal mine transportation equipment during operation, adsorption failure may occur during long-term use. Once the adsorption fails, the camera will fall off the slide seat of the slide rail, and the camera will collide with other objects after falling off, thereby causing damage to the camera. SUMMARY

[0005] The embodiment of the application provides a vehicle-mounted early warning camera, which aims to solve the technical problem that the camera is damaged after falling and colliding with other objects.

[0006] To achieve the above-mentioned purpose, the technical scheme adopted by the application is as follows: a vehicle-mounted early warning camera is provided, which comprises:

[0007] A monitoring unit comprises a slide rail having a slide seat, a base adsorptively connected with the slide seat, and a camera body installed on the base. A receiving cavity is formed on the side of the slide seat away from the slide rail. A through trigger cavity is also formed on the outer wall of the base.

[0008] A protection unit comprises a shield arranged on both sides of the camera body along a first direction and a slide plate fixedly connected with the shield one by one. The slide plate is slidably connected with the base along the first direction.

[0009] The trigger unit comprises a trigger plug arranged in the trigger cavity, a traction rope connected between the inner wall of the receiving cavity and the trigger plug, and a first elastic member fixed between the slide plate and the inner wall of the trigger cavity, the trigger plug has an insertion part inserted between the two slide plates, and the first elastic member has a pre-tightening force for moving the two slide plates towards each other.

[0010] In a possible implementation, two of the shrouds are provided with weight increasing cavities; and the vehicle-mounted early warning camera further comprises a weight increasing unit.

[0011] The weight increasing unit comprises:

[0012] A fluid tank is fixed to the outer shell of the slide rail, the fluid tank is provided with a fluid, and the fluid tank is provided with a through outlet;

[0013] A connecting pipe is connected between the outlet and the weight increasing cavity;

[0014] An opening and closing assembly is arranged at the outlet, and is used for opening or closing the outlet.

[0015] In a possible implementation, the connecting pipe is connected to only one of the weight increasing cavities, and the two shrouds are provided with sliding grooves in communication with the weight increasing cavities, and the sliding grooves extend along the moving direction of the shrouds.

[0016] The weight increasing unit further comprises:

[0017] A plug is arranged in the sliding groove, the plug is in sliding connection with the shroud along the extension direction of the sliding groove, the plug is provided with a first liquid passing hole in communication with the outside, and the outer wall of the plug is further provided with a second liquid passing hole in communication with the first liquid passing hole;

[0018] A second elastic member is fixed between the plug and the shroud, and has a pre-tightening force for extending the plug out of the sliding groove;

[0019] When the plug extends out of the sliding groove, the second liquid passing hole is not in communication with the weight increasing cavity; and after the plug moves into the sliding groove, the second liquid passing hole is in communication with the weight increasing cavity.

[0020] In a possible implementation, one of the shrouds is provided with an embedding groove, the embedding groove is arranged at the outer periphery of the sliding groove, and the other shroud is fixed with a convex ring adapted to be inserted into the embedding groove.

[0021] In a possible implementation, the outer wall of the shroud is provided with a plurality of receiving grooves, the shroud is further provided with a through groove in communication with the receiving grooves and the weight increasing cavities, and the vehicle-mounted early warning camera further comprises a protection unit.

[0022] The protection unit comprises:

[0023] an air bag arranged in the receiving groove;

[0024] a pneumatic member arranged in the through groove and communicated with the air bag, and used for drawing the gas in the weight increasing cavity into the air bag.

[0025] In a possible implementation, the opening and closing assembly comprises:

[0026] a sealing plate arranged at the outlet, the sealing plate being rotationally connected with the fluid tank, and an axis of rotation of the sealing plate being parallel to an inner wall of the fluid tank where the outlet is located;

[0027] a third elastic member arranged at a connection between the sealing plate and the fluid tank, and having a pre-tightening force for enabling the sealing plate to close the outlet.

[0028] In a possible implementation, the shroud is further provided with a ring-shaped suction port communicated with the pneumatic member, and the suction port is arranged at an outer periphery of the sliding groove.

[0029] In a possible implementation, an inner wall of the trigger cavity is provided with an enhancing groove, a fourth elastic member is arranged in the enhancing groove, the fourth elastic member is fixedly connected between the inner wall of the enhancing groove and the trigger plug, the fourth elastic member is telescopic along a moving direction of the trigger plug, and the fourth elastic member has a pre-tightening force for enabling the trigger plug to extend out of the trigger cavity.

[0030] an outer side of the trigger plug is provided with a sliding cavity, a filling block is arranged in the sliding cavity, the filling block is slidingly connected with the trigger plug along the moving direction of the trigger plug, one end of the traction rope is fixedly connected with an inner wall of the receiving cavity, and the other end of the traction rope is fixedly connected with the filling block.

[0031] an outer wall of the trigger plug is provided with a through cavity communicated between the sliding cavity and the enhancing groove, a pressing plate is arranged in the through cavity, the pressing plate is slidingly connected with the trigger plug, a moving direction of the pressing plate is perpendicular to the moving direction of the trigger plug, a fifth elastic member is fixedly connected between the pressing plate and the trigger plug, the fifth elastic member is telescopic along the moving direction of the pressing plate, and the fifth elastic member has a pre-tightening force for enabling the pressing plate to be received in the through cavity.

[0032] wherein, in an initial state of the filling block, the fourth elastic member and the fifth elastic member are both in a compressed state.

[0033] In a possible implementation, an outer wall of the filling block is rotationally connected with a ball, an axis of rotation of the ball is perpendicular to the moving direction of the filling block, and an inner wall of the sliding cavity is provided with a rolling groove rollingly matched with the ball.

[0034] In a possible implementation, the traction rope is provided with a plurality of ropes.

[0035] Compared with the prior art, the vehicle-mounted early warning camera provided by the application can avoid the camera body from directly falling by the traction rope pulling the base, and the camera body is suspended in the air; meanwhile, the two shrouds cover the camera body, so that the camera body is prevented from being knocked, the camera body is prevented from being damaged due to knocking, and the service life of the vehicle-mounted early warning camera is improved. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 FIG. 1 is a structural schematic diagram of a vehicle-mounted early warning camera according to an embodiment of the application;

[0037] Figure 2 FIG. 2 is a structural schematic diagram of the camera body after falling according to the embodiment of the application;

[0038] Figure 3 FIG. 3 is a sectional view of the two shrouds forming a protection area according to the embodiment of the application;

[0039] Figure 4 FIG. 4 is a partial sectional view of a communication mode of the two weight-increasing cavities according to the embodiment of the application;

[0040] Figure 5 FIG. 5 is a partial sectional view of the opening and closing assembly according to the embodiment of the application.

[0041] BRIEF DESCRIPTION OF REFERENCE NUMERALS

[0042] 10, monitoring unit; 101, slide rail; 1011, slide base; 10111, storage cavity; 102, base; 1021, trigger cavity; 1022, reinforcing groove; 1023, fourth elastic member; 103, camera body;

[0043] 20, protection unit; 201, shroud; 2011, weight-increasing cavity; 2012, sliding groove; 2013, embedding groove; 2014, protruding ring; 2015, storage groove; 2016, through groove; 2017, adsorption port; 202, sliding plate;

[0044] 30, triggering unit; 301, triggering plug; 3011, insertion part; 3012, sliding cavity; 3013, filling block; 30131, ball; 3014, through cavity; 3015, pressing plate; 3016, fifth elastic member; 3017, rolling groove; 302, traction rope; 303, first elastic member;

[0045] 40, weight increasing unit; 401, fluid tank; 4011, outlet; 402, connecting pipe; 403, plug; 4031, first liquid passing hole; 4032, second liquid passing hole; 404, second elastic member; 405, sealing plate;

[0046] 50, protection unit; 501, air bag; 502, pneumatic member. DETAILED DESCRIPTION

[0047] In order to make the technical problems to be solved by the present application, technical solutions and beneficial effects clearer, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0048] Please refer to Figures 1 to 5 , a vehicle-mounted early warning camera is described. A vehicle-mounted early warning camera, comprising a monitoring unit 10, a protection unit 20 and a triggering unit 30; the monitoring unit 10 comprises a sliding rail 101 with a sliding seat 1011, a base 102 connected with the sliding seat 1011 by adsorption, and a camera body 103 installed on the base 102, the sliding seat 1011 is provided with a receiving cavity 10111 on the side away from the sliding rail 101, and the outer wall of the base 102 is also provided with a through triggering cavity 1021; the protection unit 20 comprises a shield 201 arranged on both sides of the camera body 103 along a first direction and a sliding plate 202 fixedly connected with the shield 201 one by one, the sliding plate 202 is connected with the base 102 in sliding mode along the first direction; the triggering unit 30 comprises a triggering plug 301 arranged in the triggering cavity 1021, a traction rope 302 connected between the inner wall of the receiving cavity 10111 and the triggering plug 301, and a first elastic member 303 fixedly connected between the sliding plate 202 and the inner wall of the triggering cavity 1021, the triggering plug 301 has an insertion part 3011 inserted between the two sliding plates 202, the first elastic member 303 has a pre-tightening force to make the two sliding plates 202 close to each other, and the first elastic member 303 is a spring rod or a spring.

[0049] The vehicle-mounted early warning camera provided by the embodiment can be suspended in the air when the adsorption between the base 102 and the sliding seat 1011 fails, and the camera body 103 is prevented from falling directly. When the adsorption between the base 102 and the sliding seat 1011 fails, the camera body 103 and the base 102 start to fall under the action of gravity. At the moment of falling, one end of the traction rope 302 is restrained by the inner wall of the receiving cavity 10111, and the other end is connected to the trigger plug 301. The weight of the base 102 and the camera body 103 makes the traction rope 302 straight, and the base 102 is suspended below the sliding rail 101. After the traction rope 302 is straightened, the traction rope 302 pulls the trigger plug 301 to move outward of the receiving cavity 10111, and the insertion part 3011 of the trigger plug 301 is withdrawn from the gap between the two sliding plates 202. After the insertion part 3011 is withdrawn, the limiting effect on the two sliding plates 202 is released. At this time, the first elastic member 303 releases the elastic force to pull the two sliding plates 202 close to each other, and the shroud 201 fixed to the sliding plate 202 moves synchronously until it is closed to form a protective space surrounding the camera body 103.

[0050] Compared with the prior art, the camera body 103 falls from the sliding seat 1011, and the traction rope 302 pulls the base 102, so that the camera body 103 is suspended in the air, avoiding the camera body 103 from falling directly. At the same time, the base 102 is pulled by the traction rope 302, and the weight of the base 102 and the camera body 103 and the impact force of falling make the trigger plug 301 move outward of the receiving cavity 10111, so that the insertion part 3011 is withdrawn from between the two sliding plates 202. At this time, the first elastic member 303 releases the elastic force to make the two sliding plates 202 close to each other, so that the two shrouds 201 close to each other, and the two shrouds 201 form a protective space to completely cover the camera body 103. The present application suspends the falling camera body 103 in the air through the traction rope 302, and the two shrouds 201 cover the camera body 103, so as to avoid the camera body 103 from colliding, thereby avoiding the damage of the camera body 103 caused by the collision.

[0051] In some embodiments, referring to Figure 2 , Figure 3 and Figure 5 , the two shrouds 201 are each provided with a weight-increasing cavity 2011, and the vehicle-mounted early warning camera further comprises a weight-increasing unit 40.

[0052] The weight-increasing unit 40 comprises a fluid tank 401, a connecting pipe 402 and an opening and closing assembly. The fluid tank 401 is fixed to the shell of the sliding rail 101, and the fluid tank 401 is provided with a through outlet 4011. The fluid tank 401 is filled with high-density fluid. The connecting pipe 402 connects the outlet 4011 and the weight-increasing cavity 2011, and the connecting pipe 402 is a flexible hose. The opening and closing assembly is arranged at the outlet 4011 and is used to open or close the outlet 4011.

[0053] When the two shields 201 are closed to form a protection space, the opening and closing assembly enables the connecting pipe 402 to connect the outlet 4011 and the weight-increasing cavity 2011, so that the fluid enters the weight-increasing cavity 2011 through the connecting pipe 402, thereby increasing the weight of the shield 201.

[0054] During the falling process of the camera body 103, the weight-increasing cavity 2011 is a hollow cavity, so that the weight of the shield 201 is light and the gravitational acceleration of the falling camera body 103 is small, thereby slowing down the falling speed of the camera body 103; after the camera body 103 reaches the lowest point, the impact force generated by the falling camera body 103 will make the camera body 103 swing until it is restored to be static; when the falling speed of the camera body 103 is small, the impact force is low, and the number of times of swinging of the camera body 103 is also small, so that the camera body 103 can be quickly restored to be static after falling; after the camera body 103 falls, the fluid is injected into the weight-increasing cavity 2011 to increase the weight of the shield 201, thereby further shortening the time required for the camera body 103 to be restored to be static.

[0055] Optionally, the connecting pipe 402 corresponds to the weight-increasing cavity 2011 one by one, and the fluid is injected into the corresponding weight-increasing cavity 2011 through the two connecting pipes 402. This mode allows independent control of the two weight-increasing cavities 2011, can select to inject the fluid into one of the weight-increasing cavities 2011 or both of the weight-increasing cavities 2011, can control the flow rate of the injection, and can realize injection of different amounts of fluid into the two weight-increasing cavities 2011 to achieve a specific balance effect.

[0056] Referring to Figure 2 and Figure 4 , another embodiment of the connecting pipe 402 is that the connecting pipe 402 only communicates with one of the weight-increasing cavities 2011, and the two shields 201 are each provided with a chute 2012 that communicates with the weight-increasing cavity 2011 and extends along the moving direction of the shield 201; the weight-increasing unit 40 further includes a plug 403 and a second elastic member 404; the plug 403 is arranged in the chute 2012 and is in sliding connection with the shield 201 along the extension direction of the chute 2012, the plug 403 is provided with a first liquid passage hole 4031 that communicates with the outside, and the outer wall of the plug 403 is further provided with a second liquid passage hole 4032 that communicates with the first liquid passage hole 4031; the second elastic member 404 is fixedly connected between the plug 403 and the shield 201 and has a pre-tightening force that enables the plug 403 to extend out of the chute 2012, and the second elastic member 404 is a spring rod or a spring.

[0057] When the plug 403 extends out of the chute 2012, the second liquid passage hole 4032 does not communicate with the weight-increasing cavity 2011; after the plug 403 moves into the chute 2012, the second liquid passage hole 4032 communicates with the weight-increasing cavity 2011.

[0058] The initial state of the plug 403 is in the state of extending out of the sliding groove 2012, at this time, the second liquid passing hole 4032 is in the sliding groove 2012, the second liquid passing hole 4032 does not communicate with the weight increasing cavity 2011, thereby making the weight increasing cavity 2011 closed; after the two shields 201 are closed to form the protection space, the two plugs 403 are extruded with each other, so that the plug 403 moves into the sliding groove 2012, thereby making the second liquid passing hole 4032 communicate with the weight increasing cavity 2011, at the same time, the two first liquid passing holes 4031 are also aligned and communicated, thereby making the two weight increasing cavities 2011 communicate, so that after the fluid is injected into one of the weight increasing cavities 2011, the fluid flows to the other weight increasing cavity 2011 through the first liquid passing hole 4031 and the second liquid passing hole 4032, thereby increasing the weight of the shield 201.

[0059] In this way, the amount of fluid in the two weight increasing cavities 2011 is finally consistent, the symmetrical weight increasing of the two weight increasing cavities is realized, the number of external pipelines is reduced, the structure is relatively simplified, and only the fluid injection of one inlet point needs to be controlled, so that the control is simpler.

[0060] In some embodiments, referring to Figure 4 , one of the shields 201 is provided with an embedding groove 2013, the embedding groove 2013 is spaced apart from the outer periphery of the sliding groove 2012, and the other shield 201 is fixedly connected with a convex ring 2014 which is adaptively inserted into the embedding groove 2013.

[0061] After the two shields 201 are closed to form the protection space, the convex ring 2014 is inserted into the embedding groove 2013, thereby avoiding the fluid from flowing out of the gap between the abutted two shields 201.

[0062] In some embodiments, referring to Figure 2 , Figure 3 and Figure 5 , the outer wall of the shield 201 is provided with a plurality of receiving grooves 2015, the shield 201 is also provided with a through groove 2016 which communicates the receiving groove 2015 and the weight increasing cavity 2011, and the vehicle-mounted early warning camera further comprises a protection unit 50.

[0063] The protection unit 50 comprises an air bag 501 and a pneumatic member 502; the air bag 501 is arranged in the receiving groove 2015; the pneumatic member 502 is arranged in the through groove 2016 and communicates with the air bag 501, and is used for sucking the gas in the weight increasing cavity 2011 into the air bag 501, and the pneumatic member 502 is a micro diaphragm pump or a piezoelectric pump.

[0064] The opening and closing assembly comprises a sealing plate 405 and a third elastic member; the sealing plate 405 is arranged at the outlet 4011 and is rotationally connected to the fluid tank 401, and the rotation axis of the sealing plate 405 is parallel to the inner wall of the fluid tank 401 where the outlet 4011 is located; the third elastic member is arranged at the connection between the sealing plate 405 and the fluid tank 401 and has a pre-tightening force for closing the outlet 4011 by the sealing plate 405, and the third elastic member is a torsion spring.

[0065] It should be noted that a friction pad is arranged at the rotation axis of the sealing plate 405, and the sealing plate 405 needs to overcome the elastic force of the third elastic member and the friction force of the friction pad when being opened, so that a high threshold is required for opening the sealing plate 405, and when being closed, the friction force helps to maintain the open state of the sealing plate 405, and the sealing plate 405 will only be closed when the pressure difference is significantly reduced, so as to ensure that the sealing plate 405 remains open during fluid filling.

[0066] After the two shrouds 201 are closed to form a protection space, the pneumatic member 502 starts to draw the gas in the weight-increasing cavity 2011 into the air bag 501, so that the air bag 501 is inflated and protrudes out of the receiving groove 2015. The gas in the weight-increasing cavity 2011 is drawn out, so that a pressure difference is generated on both sides of the sealing plate 405. In the initial stage, the pressure difference cannot overcome the elastic force of the third elastic member and the friction force of the friction pad, so the fluid cannot enter the weight-increasing cavity 2011 at this time; after the air bag 501 is fully inflated, the pneumatic member 502 is closed at this time to separate the air bag 501 and the weight-increasing cavity 2011, and at the same time, the pressure difference overcomes the elastic force of the third elastic member and the friction force of the friction pad, so that the sealing plate 405 rotates to open the outlet 4011, and the fluid in the fluid tank 401 flows into the weight-increasing cavity 2011 through the connecting pipe 402.

[0067] Therefore, in the process of hanging and swinging, the air bag 501 first contacts other objects, reduces the collision of the shroud 201, and protects the shroud 201 and the camera body 103.

[0068] In some embodiments, referring to Figure 4 The shroud 201 is also provided with a ring-shaped suction port 2017 which is in communication with the pneumatic member 502 and is arranged at the outer periphery of the chute 2012.

[0069] After the pneumatic member 502 is started, the gas in the suction port 2017 is drawn out, and after the two shrouds 201 are butted, the two aligned suction ports 2017 are sucked to each other, so as to enhance the sealing between the two shrouds 201 and further reduce the possibility of fluid leakage.

[0070] In some embodiments, referring to Figure 2The inner wall of the trigger cavity 1021 is provided with a reinforcing groove 1022, and the fourth elastic member 1023 is arranged in the reinforcing groove 1022. The fourth elastic member 1023 is fixedly connected between the inner wall of the reinforcing groove 1022 and the trigger plug 301. The fourth elastic member 1023 is telescopic along the moving direction of the trigger plug 301. The fourth elastic member 1023 has a pre-tightening force for making the trigger plug 301 extend out of the trigger cavity 1021. The fourth elastic member 1023 is a spring rod or a spring.

[0071] The outer side of the trigger plug 301 is provided with a sliding cavity 3012, and the sliding cavity 302 is provided with a filling block 3013. The filling block 3013 is in sliding connection with the trigger plug 301 along the moving direction of the trigger plug 301. One end of the traction rope 302 is fixedly connected with the inner wall of the receiving cavity 10111. The other end of the traction rope 302 is fixedly connected with the filling block 3013.

[0072] The outer wall of the trigger plug 301 is provided with a through cavity 3014 which communicates the sliding cavity 3012 and the reinforcing groove 1022. The through cavity 3014 is provided with a pressing plate 3015. The pressing plate 3015 is in sliding connection with the trigger plug 301. The moving direction of the pressing plate 3015 is perpendicular to the moving direction of the trigger plug 301. The fifth elastic member 3016 is fixedly connected between the pressing plate 3015 and the trigger plug 301. The fifth elastic member 3016 is telescopic along the moving direction of the pressing plate 3015. The fifth elastic member 3016 has a pre-tightening force for making the pressing plate 3015 enter the through cavity 3014. The fifth elastic member 3016 is a spring rod or a spring.

[0073] The initial state of the filling block 3013 is that the fourth elastic member 1023 and the fifth elastic member 3016 are in the compressed state.

[0074] After the traction rope 302 is straightened, the filling block 3013 moves outwardly along the sliding cavity 3012 due to the weight of the base 102 and the camera body 103 and the impact force of falling. After the filling block 3013 is separated from the pressing plate 3015, the fifth elastic member 3016 releases the elastic force to make the pressing plate 3015 move into the through cavity 3014. After the pressing plate 3015 is completely received in the through cavity 3014, the fourth elastic member 1023 releases the elastic force to drive the trigger plug 301 to move outwardly along the trigger cavity 1021.

[0075] The traction rope 302 needs to pull the trigger plug 301 to be converted into pulling the filling block 3013. Then, the fourth elastic member 1023 ensures that the trigger plug 301 can move outwardly along the trigger cavity 1021, so as to avoid the situation that the two protective covers 201 cannot be closed to form a protective space after the camera body 103 falls.

[0076] The initial position of the trigger plug 301 is between the two sliding plates 202, at this time the trigger plug 301 is subjected to the friction provided by the sliding plate 202, and also subjected to the extrusion force provided by the first elastic member 303, the impact force caused by the control of the falling needs to be greater than the friction provided by the sliding plate 202 and the extrusion force provided by the first elastic member 303, then the length of the traction rope 302 needs to reach a certain value. The traction rope 302 needs to pull the trigger plug 301 into the filling block 3013, the movement of the filling block 3013 is not completely dependent on the pulling force of the traction rope, but uses the combination of gravity, impact force and elastic member, the weight and impact provide initial kinetic energy, and the fifth elastic member 3016 and the fourth elastic member 1023 store and release energy to ensure the completion of the action, which is similar to a “mechanical lever”, which converts small input force (traction rope straightening) into large output force (trigger plug movement), at this time the length of the traction rope 302 required is less than the length of the traction rope 303 required in the above case, reducing the length of the traction rope 302 to reduce the falling height, and further reducing the possibility of collision with other objects.

[0077] In some embodiments, referring to Figure 3 The outer wall of the filling block 3013 is rotationally connected with a ball 30131, the rotation axis of the ball 30131 is perpendicular to the moving direction of the filling block 3013, and the inner wall of the sliding cavity 3012 is provided with a rolling groove 3017 matched with the rolling of the ball 30131.

[0078] The sliding friction between the filling block 3013 and the sliding cavity 3012 is replaced by rolling friction, further reducing the force required for displacement of the filling block 3013, thereby ensuring that the filling block 3013 can be pulled after the camera body 103 falls.

[0079] In some embodiments, the traction rope 302 is provided with a plurality of.

[0080] The plurality of traction ropes 302 share the pulling force, and single breakage can still trigger protection, and the plurality of traction ropes 302 can also reduce the degree of freedom of the base 102 and slow down the shaking of the base 102.

[0081] The above only describes the preferred embodiments of the present application and does not limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A vehicle-mounted early warning camera, characterized in that, The vehicle-mounted early warning camera comprises a monitoring unit, a protection unit, a triggering unit and a weight increasing unit. The monitoring unit comprises a slide rail with a slide base, a base in suction connection with the slide base and a camera body mounted on the base. The slide base is provided with a receiving cavity on the side away from the slide rail. The base is further provided with a through trigger cavity on the outer wall. The protection unit comprises a shroud provided on both sides of the camera body along a first direction and a slide plate in one-to-one correspondence with the shroud. The slide plate is in sliding connection with the base along the first direction. The triggering unit comprises a trigger plug provided in the trigger cavity, a traction rope connected between the inner wall of the receiving cavity and the trigger plug and a first elastic member fixed between the slide plate and the inner wall of the trigger cavity. The trigger plug is provided with an insertion part inserted between the two slide plates. The first elastic member has a pre-tightening force to make the two slide plates close to each other.

2. The vehicle-mounted pre-warning camera of claim 1, wherein, Two weight increasing cavities are provided in the shroud. The vehicle-mounted early warning camera further comprises a weight increasing unit. The weight increasing unit comprises a fluid tank fixed to the outer shell of the slide rail. The fluid tank is provided with a fluid. The fluid tank is provided with a through outlet.

3. The vehicle-mounted pre-warning camera of claim 2, wherein, A connecting pipe is connected between the outlet and the weight increasing cavity.

4. The vehicle-mounted pre-warning camera of claim 2, wherein, An opening and closing assembly is provided on the outlet to open or close the outlet. The connecting pipe is connected with only one of the weight increasing cavities. The shroud is provided with a sliding groove in communication with the weight increasing cavity. The sliding groove extends along the moving direction of the shroud.

5. The vehicle-mounted pre-warning camera of claim 4, wherein, The weight increasing unit further comprises a plug provided in the sliding groove. The plug is in sliding connection with the shroud along the extension direction of the sliding groove. The plug is provided with a first liquid passage in communication with the outside.

6. The vehicle-mounted pre-warning camera of claim 4, wherein, The outer wall of the plug is further provided with a second liquid passage in communication with the first liquid passage. A second elastic member is fixed between the plug and the shroud. The second elastic member has a pre-tightening force to make the plug extend out of the sliding groove. When the plug extends out of the sliding groove, the second liquid passage is not in communication with the weight increasing cavity. After the plug moves into the sliding groove, the second liquid passage is in communication with the weight increasing cavity. One of the shrouds is provided with a recess. The recess is spaced apart from the outer periphery of the sliding groove. The other shroud is fixed with a convex ring adapted to be inserted into the recess. The outer wall of the shroud is provided with a plurality of receiving grooves. The shroud is further provided with a through groove in communication with the receiving groove and the weight increasing cavity. The vehicle-mounted early warning camera further comprises a protection unit. The protection unit comprises an air bag provided in the receiving groove. A pneumatic member is provided in the through groove and in communication with the air bag. The opening and closing assembly comprises a sealing plate provided on the outlet. The sealing plate is in rotational connection with the fluid tank. The rotational axis of the sealing plate is parallel to the inner wall of the fluid tank. A third elastic member is provided at the connection between the sealing plate and the fluid tank. The third elastic member has a pre-tightening force to make the sealing plate close the outlet. The shroud is further provided with a ring-shaped suction port in communication with the pneumatic member. The suction port is provided on the outer periphery of the sliding groove.

7. The vehicle-mounted pre-warning video camera according to claim 1, wherein The inner wall of the trigger cavity is provided with a reinforcing groove, a fourth elastic member is arranged in the reinforcing groove, the fourth elastic member is fixed between the inner wall of the reinforcing groove and the trigger plug, the fourth elastic member is telescopic along the moving direction of the trigger plug, and the fourth elastic member has a pre-tightening force for making the trigger plug extend out of the trigger cavity; The outer side of the trigger plug is provided with a sliding cavity, a filler block is arranged in the sliding cavity, the filler block is in sliding connection with the trigger plug along the moving direction of the trigger plug, one end of the traction rope is fixed to the inner wall of the receiving cavity, and the other end of the traction rope is fixed to the filler block; The outer wall of the trigger plug is provided with a through cavity which is in communication with the sliding cavity and the reinforcing groove, a pressing plate is arranged in the through cavity, the pressing plate is in sliding connection with the trigger plug, the moving direction of the pressing plate is perpendicular to the moving direction of the trigger plug, a fifth elastic member is fixed between the pressing plate and the trigger plug, the fifth elastic member is telescopic along the moving direction of the pressing plate, and the fifth elastic member has a pre-tightening force for making the pressing plate enter the through cavity; The initial state of the filler block is that the fourth elastic member and the fifth elastic member are both in the compressed state.

8. The vehicle-mounted pre-warning camera of claim 7, wherein, The outer wall of the filler block is rotatably connected with a ball, the rotating shaft of the ball is perpendicular to the moving direction of the filler block, and the inner wall of the sliding cavity is provided with a rolling groove which is in rolling adaptation with the ball.

9. The vehicle-mounted pre-warning camera of claim 7, wherein, The traction rope is provided with a plurality of traction ropes.

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